Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 17 | Shower Music Controller |
Amar Patel Shalin Joshi Varnith Aleti |
Eric Tang | design_document1.pdf proposal1.pdf |
|
| # Shower Music Controller Team Members: - Shalin Joshi (shalinj2) - Amar Patel (amarcp2) - Varnith Aleti (valet3) # Problem People often like to listen to music when they are in the shower, but it is very inconvenient to control/play specific music with wet hands, foggy screens, and with devices that aren't waterproof. If the person wants to switch the song, it leads to issues of getting the phone wet, having to step out of the shower, or just being stuck with whatever song is being played. # Solution The solution is a waterproof device that can be stuck to a shower wall, which allows the user to play, pause, skip, and even search for their playlists/songs from Spotify. This device will act as a Bluetooth remote interface to connect to a phone companion app. The app will be able to call the Spotify API and communicate with the device in order to do each task. The device will include buttons for playback actions and D-Pad buttons to navigate the UI on a screen. # Solution Components ## Subsystem 1 - Embedded UI (Screen + Buttons) Displays different menus and music lists (search, my playlists, now playing) and captures user input by using physical buttons. The buttons will be different ones for playback controls (play, pause, skip, volume) and a d-pad to navigate through the menus and songs on the UI. D-pad implemented using 4 tactile switches (UP/DOWN/LEFT/RIGHT) arranged in a cross layout plus a center SELECT switch, all mounted on the PCB and covered through a waterproof silicone membrane. Components: - SPI TFT display module using ILI9341 controller - Tactile Switches ## Subsystem 2 - Microcontroller + BLE Communication Runs the software for the button controls and has Bluetooth communication with the phone. Sends commands (play/pause, search query, select track) and receives results/status updates from the phone. Components: - ESP32 Microcontroller ## Subsystem 3 - Phone Companion App + Spotify Integration Handles Spotify authentication and all Web API requests. Translates Bluetooth messages from the device into Spotify actions and returns data back to the device. The app will do all the music control and Spotify connections and communicate with the device in order to know which actions to perform Components: - Mobile app using Swift or React - Spotify WebAPI ## Subsystem 4 - Power, Charging, and Water-resistant Enclosure Provides safe portable power, charging, voltage regulation, and physical waterproofing suitable for shower spray/steam. This subsystem will ensure that the device and its components are water-resistant and have charging capabilities. We will make sure that water doesn’t harm our device by enclosing it in a 3D-printed enclosure. The screen will be covered by a clear acrylic/polycarbonate display window, and the buttons will be lined with a silicone membrane. When the user wants to charge the device, they will remove it from the enclosure and shower and charge it elsewhere. Components: - LiPo Battery - Li-ion charger IC/module (USB powered charging) - 3.3V regulator for MCU and display - Waterproof enclosure elements - 3D printed enclosure for the device board and circuitry - Clear acrylic/polycarbonate display window - Silicone membrane for buttons # Criterion For Success - From the shower device, the user can successfully perform different playback actions with a maximum 1-2 seconds of delay: Play/Pause, Next Track, Previous Track, Volume Up/Down - Users can enter a search query using buttons, submit it, receive at least 5 search results on the device screen, select one, and start playback. - Device can connect through bluetooth to phone companion app and remain connected through the entire duration of a shower - Device remains functional after 5 minutes of exposure to shower spray/steam. - Device operates for at least 2 hours of active use on a full charge. |
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